9e9c918259
Summary: Target link variables are currently implemented by creating a copy of the variables on the device side and unified memory never gets exploited. When the prgram uses the: ``` #pragma omp requires unified_shared_memory ``` directive in conjunction with a declare target link, the linked variable is no longer allocated on the device and the host version is used instead. This behavior is overridden by performing an explicit mapping. A Clang side patch is required. Reviewers: ABataev, AlexEichenberger, grokos, Hahnfeld Reviewed By: AlexEichenberger, grokos, Hahnfeld Subscribers: Hahnfeld, jfb, guansong, jdoerfert, openmp-commits Tags: #openmp Differential Revision: https://reviews.llvm.org/D60223 llvm-svn: 361294
46 lines
2.0 KiB
C
46 lines
2.0 KiB
C
// RUN: %libomptarget-compile-aarch64-unknown-linux-gnu && env LIBOMPTARGET_DEBUG=1 %libomptarget-run-aarch64-unknown-linux-gnu 2>&1 | %fcheck-aarch64-unknown-linux-gnu -allow-empty -check-prefix=DEBUG
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// RUN: %libomptarget-compile-powerpc64-ibm-linux-gnu && env LIBOMPTARGET_DEBUG=1 %libomptarget-run-powerpc64-ibm-linux-gnu 2>&1 | %fcheck-powerpc64-ibm-linux-gnu -allow-empty -check-prefix=DEBUG
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// RUN: %libomptarget-compile-powerpc64le-ibm-linux-gnu && env LIBOMPTARGET_DEBUG=1 %libomptarget-run-powerpc64le-ibm-linux-gnu 2>&1 | %fcheck-powerpc64le-ibm-linux-gnu -allow-empty -check-prefix=DEBUG
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// RUN: %libomptarget-compile-x86_64-pc-linux-gnu && env LIBOMPTARGET_DEBUG=1 %libomptarget-run-x86_64-pc-linux-gnu 2>&1 | %fcheck-x86_64-pc-linux-gnu -allow-empty -check-prefix=DEBUG
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// REQUIRES: libomptarget-debug
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/*
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Test for the 'requires' clause check.
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When a target region is used, the requires flags are set in the
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runtime for the entire compilation unit. If the flags are set again,
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(for whatever reason) the set must be consistent with previously
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set values.
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*/
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#include <stdio.h>
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#include <omp.h>
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// ---------------------------------------------------------------------------
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// Various definitions copied from OpenMP RTL
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extern void __tgt_register_requires(int64_t);
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// End of definitions copied from OpenMP RTL.
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// ---------------------------------------------------------------------------
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void run_reg_requires() {
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// Before the target region is registered, the requires registers the status
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// of the requires clauses. Since there are no requires clauses in this file
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// the flags state can only be OMP_REQ_NONE i.e. 1.
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// This is the 2nd time this function is called so it should print the debug
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// info belonging to the check.
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__tgt_register_requires(1);
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__tgt_register_requires(1);
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// DEBUG: New requires flags 1 compatible with existing 1!
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}
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// ---------------------------------------------------------------------------
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int main() {
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run_reg_requires();
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// This also runs reg requires for the first time.
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#pragma omp target
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{}
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return 0;
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} |